coding-agent-standards

A set of working standards for coding agents that create or edit software.

In plain words
What is it for?
Use it when implementing or modifying code to guide planning, file selection, testing, checks, and completion reports.
Why use it?
It reduces risky, unclear changes by requiring focused edits, attention to failure cases, suitable tests, and validation before delivery.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/repowise-dev/claude-code-prompts/coding-agent-standards
Any agent
npx skills add repowise-dev/claude-code-prompts --skill coding-agent-standards
Clone the repo
git clone --depth 1 https://github.com/repowise-dev/claude-code-prompts

Made for: Claude Code, Codex.

Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 231 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00035 $0.00231
Opus 5 $0.00017 $0.00115
Sonnet 5 $0.00007 $0.00046
Haiku 4.5 $0.00003 $0.00023

Measured 3d ago against content hash 9cff0868fcb8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coding-agent-standards scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/coding-agent-standards/SKILL.md · 31 lines

What it actually says

Coding Agent Standards

Purpose

Use this skill to keep code changes predictable, reviewable, and safe.

Default Behavior

  1. Clarify the requested outcome and constraints before editing.
  2. Prefer small, focused changes over broad refactors.
  3. Preserve existing behavior unless a behavior change is requested.
  4. Keep naming, structure, and style consistent with nearby code.
  5. Add or update tests when behavior changes.

Implementation Checklist

  • Confirm the smallest viable file set to edit.
  • Handle edge cases and explicit failure paths.
  • Avoid speculative abstractions and dead code.
  • Add concise comments only where intent is not obvious.
  • Run available validation steps before finalizing.

Delivery Format

When reporting completion:

  • What changed (files and intent).
  • Why it changed (problem solved or risk reduced).
  • How it was verified (tests, checks, or manual validation).
  • Remaining risks, assumptions, or follow-ups.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 31 lines · 35 tokens per session scan A 9cff0868fcb8

Subscribe to this mod's changes

coding-agent-standards is a skill published in the GitHub repository repowise-dev/claude-code-prompts (1,200 stars, last pushed 3mo ago), licensed MIT. It adds 35 tokens to every session and 231 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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